Zachariah Milton Garrison, son of Luther Alexander Stamps Garrison and Mahala “Milly” “Millie” Logan Garrison, was named for his grandfathers, Zachariah Logan and John Milton Garrison. Zachariah M. Garrison married Mary Lucinda Brock in 1859 in Bates County, Missouri. He mustered in to Co. I, 78th Illinois Volunteer Infantry Regiment, U.S. (Union), in 1862 in Rushville, Schuyler County, Illinois. His regiment saw hard fighting, including the battles of Chickamauga, Missionary Ridge, the Atlanta campaign; then was a part of Sherman’s March to the Sea; finishing up with the Carolina campaign and the Battle of Bentonsville. He mustered out in 1865 as a sergeant.